Keysight 654xA, 655xA, 664xA, 665xA Error E9: Secondary interface ROM test failed (power-on, and for models 664xA & 665xA, also *TST?).

GPIB DC Power Supply · taken from the manufacturer’s manual, pages cited

Error codeE9

Secondary interface ROM test failed (power-on, and for models 664xA & 665xA, also *TST?) due to a defective microprocessor AIU504. The manual lists no action for this code.

Model
Keysight 654xA, 655xA, 664xA, 665xA
Display shows
E9
Type
Error code
Source
Manual p. 37

What E9 means

Secondary interface ROM test failed (power-on, and for models 664xA & 665xA, also *TST?). p. 37

Common causes

  • Microprocessor AIU504 defective. p. 37

If E9 is still not resolved

The manual gives no further instruction for this code. Open the code table in the PDF or contact Keysight service.

Open the manual at page 37 All 654xA, 655xA, 664xA, 665xA error codes Manual details & download

This page summarises what the manufacturer’s manual says about E9; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Keysight. Found a mistake? Report an error.